Be kind to others and don't gossip or trash talk. I know in school it can be very tempting to gossip about the most popular girl or trash talk about others but don't. Not only is it the civil thing to do but if you cause trouble you will get attention. If you gossip about the popular girl she'll gossip about you if you trash talk about someone some else will trash talk about you. Then you'll have the whole school talking about you which is the opposite of what you were aiming for.